<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <style>
        tr{
            background-color: green;
        }
    </style>
</head>
<body>
<p>你好，世界aaaaaaaaaaaaaaaaaaaaa
</p>
<form>
    <table>
        <tr>
            <td>user: </td>
            <td><input type="text"></td>
        </tr>
        <tr>
            <td>pass: </td>
            <td><input type="password"></td>
        </tr>

    </table>
</form>
</body>
</html>